iwl-core.c 91.5 KB
Newer Older
T
Tomas Winkler 已提交
1 2 3 4
/******************************************************************************
 *
 * GPL LICENSE SUMMARY
 *
5
 * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
T
Tomas Winkler 已提交
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * Contact Information:
25
 *  Intel Linux Wireless <ilw@linux.intel.com>
T
Tomas Winkler 已提交
26 27 28 29 30
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *****************************************************************************/

#include <linux/kernel.h>
#include <linux/module.h>
31
#include <linux/etherdevice.h>
32
#include <net/mac80211.h>
T
Tomas Winkler 已提交
33

A
Assaf Krauss 已提交
34
#include "iwl-eeprom.h"
35
#include "iwl-dev.h" /* FIXME: remove */
W
Winkler, Tomas 已提交
36
#include "iwl-debug.h"
T
Tomas Winkler 已提交
37
#include "iwl-core.h"
38
#include "iwl-io.h"
M
Mohamed Abbas 已提交
39
#include "iwl-power.h"
40
#include "iwl-sta.h"
M
Mohamed Abbas 已提交
41
#include "iwl-helpers.h"
T
Tomas Winkler 已提交
42

43

T
Tomas Winkler 已提交
44 45
MODULE_DESCRIPTION("iwl core");
MODULE_VERSION(IWLWIFI_VERSION);
46
MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
T
Tomas Winkler 已提交
47
MODULE_LICENSE("GPL");
T
Tomas Winkler 已提交
48

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = {
	{COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP,
	 0, COEX_UNASSOC_IDLE_FLAGS},
	{COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP,
	 0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
	{COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP,
	 0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
	{COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP,
	 0, COEX_CALIBRATION_FLAGS},
	{COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP,
	 0, COEX_PERIODIC_CALIBRATION_FLAGS},
	{COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP,
	 0, COEX_CONNECTION_ESTAB_FLAGS},
	{COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP,
	 0, COEX_ASSOCIATED_IDLE_FLAGS},
	{COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP,
	 0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
	{COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP,
	 0, COEX_ASSOC_AUTO_SCAN_FLAGS},
	{COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP,
	 0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
	{COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS},
	{COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS},
	{COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP,
	 0, COEX_STAND_ALONE_DEBUG_FLAGS},
	{COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP,
	 0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
	{COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS},
	{COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS}
};

R
Ron Rindjunsky 已提交
80 81 82 83 84 85 86 87 88 89 90 91 92
#define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
	[IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
				    IWL_RATE_SISO_##s##M_PLCP, \
				    IWL_RATE_MIMO2_##s##M_PLCP,\
				    IWL_RATE_MIMO3_##s##M_PLCP,\
				    IWL_RATE_##r##M_IEEE,      \
				    IWL_RATE_##ip##M_INDEX,    \
				    IWL_RATE_##in##M_INDEX,    \
				    IWL_RATE_##rp##M_INDEX,    \
				    IWL_RATE_##rn##M_INDEX,    \
				    IWL_RATE_##pp##M_INDEX,    \
				    IWL_RATE_##np##M_INDEX }

93 94 95
u32 iwl_debug_level;
EXPORT_SYMBOL(iwl_debug_level);

M
Mohamed Abbas 已提交
96 97
static irqreturn_t iwl_isr(int irq, void *data);

R
Ron Rindjunsky 已提交
98 99 100 101 102 103 104 105
/*
 * Parameter order:
 *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
 *
 * If there isn't a valid next or previous rate then INV is used which
 * maps to IWL_RATE_INVALID
 *
 */
106
const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
R
Ron Rindjunsky 已提交
107 108 109 110 111 112 113 114 115 116 117 118 119 120 121
	IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
	IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
	IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
	IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
	IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
	IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
	IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
	IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
	IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
	IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
	IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
	IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
	IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
	/* FIXME:RS:          ^^    should be INV (legacy) */
};
122
EXPORT_SYMBOL(iwl_rates);
R
Ron Rindjunsky 已提交
123

124 125 126 127
/**
 * translate ucode response to mac80211 tx status control values
 */
void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
128
				  struct ieee80211_tx_info *info)
129
{
130
	struct ieee80211_tx_rate *r = &info->control.rates[0];
131

132
	info->antenna_sel_tx =
133 134
		((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
	if (rate_n_flags & RATE_MCS_HT_MSK)
135
		r->flags |= IEEE80211_TX_RC_MCS;
136
	if (rate_n_flags & RATE_MCS_GF_MSK)
137
		r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
138
	if (rate_n_flags & RATE_MCS_HT40_MSK)
139
		r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
140
	if (rate_n_flags & RATE_MCS_DUP_MSK)
141
		r->flags |= IEEE80211_TX_RC_DUP_DATA;
142
	if (rate_n_flags & RATE_MCS_SGI_MSK)
143
		r->flags |= IEEE80211_TX_RC_SHORT_GI;
144
	r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
145 146 147 148 149 150 151 152 153 154 155
}
EXPORT_SYMBOL(iwl_hwrate_to_tx_control);

int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
{
	int idx = 0;

	/* HT rate format */
	if (rate_n_flags & RATE_MCS_HT_MSK) {
		idx = (rate_n_flags & 0xff);

156 157 158
		if (idx >= IWL_RATE_MIMO3_6M_PLCP)
			idx = idx - IWL_RATE_MIMO3_6M_PLCP;
		else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178
			idx = idx - IWL_RATE_MIMO2_6M_PLCP;

		idx += IWL_FIRST_OFDM_RATE;
		/* skip 9M not supported in ht*/
		if (idx >= IWL_RATE_9M_INDEX)
			idx += 1;
		if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
			return idx;

	/* legacy rate format, search for match in table */
	} else {
		for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
			if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
				return idx;
	}

	return -1;
}
EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);

179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199
int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
{
	int idx = 0;
	int band_offset = 0;

	/* HT rate format: mac80211 wants an MCS number, which is just LSB */
	if (rate_n_flags & RATE_MCS_HT_MSK) {
		idx = (rate_n_flags & 0xff);
		return idx;
	/* Legacy rate format, search for match in table */
	} else {
		if (band == IEEE80211_BAND_5GHZ)
			band_offset = IWL_FIRST_OFDM_RATE;
		for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
			if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
				return idx - band_offset;
	}

	return -1;
}

T
Tomas Winkler 已提交
200 201 202 203 204 205 206 207 208 209 210
u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
{
	int i;
	u8 ind = ant;
	for (i = 0; i < RATE_ANT_NUM - 1; i++) {
		ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
		if (priv->hw_params.valid_tx_ant & BIT(ind))
			return ind;
	}
	return ant;
}
211
EXPORT_SYMBOL(iwl_toggle_tx_ant);
212 213 214 215 216

const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
EXPORT_SYMBOL(iwl_bcast_addr);


217 218 219 220 221 222 223 224 225 226 227
/* This function both allocates and initializes hw and priv. */
struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
		struct ieee80211_ops *hw_ops)
{
	struct iwl_priv *priv;

	/* mac80211 allocates memory for this device instance, including
	 *   space for this driver's private structure */
	struct ieee80211_hw *hw =
		ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
	if (hw == NULL) {
228 229
		printk(KERN_ERR "%s: Can not allocate network device\n",
		       cfg->name);
230 231 232 233 234 235 236 237 238 239 240
		goto out;
	}

	priv = hw->priv;
	priv->hw = hw;

out:
	return hw;
}
EXPORT_SYMBOL(iwl_alloc_all);

241 242 243 244 245 246 247 248
void iwl_hw_detect(struct iwl_priv *priv)
{
	priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
	priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
	pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
}
EXPORT_SYMBOL(iwl_hw_detect);

249 250 251 252 253 254 255 256
int iwl_hw_nic_init(struct iwl_priv *priv)
{
	unsigned long flags;
	struct iwl_rx_queue *rxq = &priv->rxq;
	int ret;

	/* nic_init */
	spin_lock_irqsave(&priv->lock, flags);
257
	priv->cfg->ops->lib->apm_ops.init(priv);
258 259 260 261

	/* Set interrupt coalescing timer to 512 usecs */
	iwl_write8(priv, CSR_INT_COALESCING, 512 / 32);

262 263 264 265 266 267 268 269 270 271
	spin_unlock_irqrestore(&priv->lock, flags);

	ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);

	priv->cfg->ops->lib->apm_ops.config(priv);

	/* Allocate the RX queue, or reset if it is already allocated */
	if (!rxq->bd) {
		ret = iwl_rx_queue_alloc(priv);
		if (ret) {
272
			IWL_ERR(priv, "Unable to initialize Rx queue\n");
273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299
			return -ENOMEM;
		}
	} else
		iwl_rx_queue_reset(priv, rxq);

	iwl_rx_replenish(priv);

	iwl_rx_init(priv, rxq);

	spin_lock_irqsave(&priv->lock, flags);

	rxq->need_update = 1;
	iwl_rx_queue_update_write_ptr(priv, rxq);

	spin_unlock_irqrestore(&priv->lock, flags);

	/* Allocate and init all Tx and Command queues */
	ret = iwl_txq_ctx_reset(priv);
	if (ret)
		return ret;

	set_bit(STATUS_INIT, &priv->status);

	return 0;
}
EXPORT_SYMBOL(iwl_hw_nic_init);

300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332
/*
 * QoS  support
*/
void iwl_activate_qos(struct iwl_priv *priv, u8 force)
{
	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

	priv->qos_data.def_qos_parm.qos_flags = 0;

	if (priv->qos_data.qos_cap.q_AP.queue_request &&
	    !priv->qos_data.qos_cap.q_AP.txop_request)
		priv->qos_data.def_qos_parm.qos_flags |=
			QOS_PARAM_FLG_TXOP_TYPE_MSK;
	if (priv->qos_data.qos_active)
		priv->qos_data.def_qos_parm.qos_flags |=
			QOS_PARAM_FLG_UPDATE_EDCA_MSK;

	if (priv->current_ht_config.is_ht)
		priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;

	if (force || iwl_is_associated(priv)) {
		IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
				priv->qos_data.qos_active,
				priv->qos_data.def_qos_parm.qos_flags);

		iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
				       sizeof(struct iwl_qosparam_cmd),
				       &priv->qos_data.def_qos_parm, NULL);
	}
}
EXPORT_SYMBOL(iwl_activate_qos);

W
Wey-Yi Guy 已提交
333 334 335 336 337 338 339 340
/*
 * AC        CWmin         CW max      AIFSN      TXOP Limit    TXOP Limit
 *                                              (802.11b)      (802.11a/g)
 * AC_BK      15            1023        7           0               0
 * AC_BE      15            1023        3           0               0
 * AC_VI       7              15        2          6.016ms       3.008ms
 * AC_VO       3               7        2          3.264ms       1.504ms
 */
R
Ron Rindjunsky 已提交
341
void iwl_reset_qos(struct iwl_priv *priv)
342 343 344 345
{
	u16 cw_min = 15;
	u16 cw_max = 1023;
	u8 aifs = 2;
346
	bool is_legacy = false;
347 348 349 350
	unsigned long flags;
	int i;

	spin_lock_irqsave(&priv->lock, flags);
351 352 353 354 355 356 357 358
	/* QoS always active in AP and ADHOC mode
	 * In STA mode wait for association
	 */
	if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
	    priv->iw_mode == NL80211_IFTYPE_AP)
		priv->qos_data.qos_active = 1;
	else
		priv->qos_data.qos_active = 0;
359

360 361 362 363 364
	/* check for legacy mode */
	if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
	    (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
	    (priv->iw_mode == NL80211_IFTYPE_STATION &&
	    (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
365 366 367 368 369 370 371
		cw_min = 31;
		is_legacy = 1;
	}

	if (priv->qos_data.qos_active)
		aifs = 3;

W
Wey-Yi Guy 已提交
372
	/* AC_BE */
373 374 375 376 377 378 379
	priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
	priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
	priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
	priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
	priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;

	if (priv->qos_data.qos_active) {
W
Wey-Yi Guy 已提交
380
		/* AC_BK */
381 382 383 384 385 386 387
		i = 1;
		priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
		priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
		priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
		priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;

W
Wey-Yi Guy 已提交
388
		/* AC_VI */
389 390 391 392
		i = 2;
		priv->qos_data.def_qos_parm.ac[i].cw_min =
			cpu_to_le16((cw_min + 1) / 2 - 1);
		priv->qos_data.def_qos_parm.ac[i].cw_max =
W
Wey-Yi Guy 已提交
393
			cpu_to_le16(cw_min);
394 395 396 397 398 399 400 401 402
		priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
		if (is_legacy)
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(6016);
		else
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(3008);
		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;

W
Wey-Yi Guy 已提交
403
		/* AC_VO */
404 405 406 407
		i = 3;
		priv->qos_data.def_qos_parm.ac[i].cw_min =
			cpu_to_le16((cw_min + 1) / 4 - 1);
		priv->qos_data.def_qos_parm.ac[i].cw_max =
W
Wey-Yi Guy 已提交
408
			cpu_to_le16((cw_min + 1) / 2 - 1);
409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427
		priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
		if (is_legacy)
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(3264);
		else
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(1504);
	} else {
		for (i = 1; i < 4; i++) {
			priv->qos_data.def_qos_parm.ac[i].cw_min =
				cpu_to_le16(cw_min);
			priv->qos_data.def_qos_parm.ac[i].cw_max =
				cpu_to_le16(cw_max);
			priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
			priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
			priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
		}
	}
428
	IWL_DEBUG_QOS(priv, "set QoS to default \n");
429 430 431

	spin_unlock_irqrestore(&priv->lock, flags);
}
R
Ron Rindjunsky 已提交
432 433
EXPORT_SYMBOL(iwl_reset_qos);

J
Johannes Berg 已提交
434 435
#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
R
Ron Rindjunsky 已提交
436
static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
J
Johannes Berg 已提交
437
			      struct ieee80211_sta_ht_cap *ht_info,
R
Ron Rindjunsky 已提交
438 439
			      enum ieee80211_band band)
{
R
Ron Rindjunsky 已提交
440 441 442 443
	u16 max_bit_rate = 0;
	u8 rx_chains_num = priv->hw_params.rx_chains_num;
	u8 tx_chains_num = priv->hw_params.tx_chains_num;

R
Ron Rindjunsky 已提交
444
	ht_info->cap = 0;
J
Johannes Berg 已提交
445
	memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
R
Ron Rindjunsky 已提交
446

J
Johannes Berg 已提交
447
	ht_info->ht_supported = true;
R
Ron Rindjunsky 已提交
448

449 450
	if (priv->cfg->ht_greenfield_support)
		ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
J
Johannes Berg 已提交
451
	ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
452 453 454 455 456 457
	if (priv->cfg->support_sm_ps)
		ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
				     (WLAN_HT_CAP_SM_PS_DYNAMIC << 2));
	else
		ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
				     (WLAN_HT_CAP_SM_PS_DISABLED << 2));
R
Ron Rindjunsky 已提交
458 459

	max_bit_rate = MAX_BIT_RATE_20_MHZ;
460
	if (priv->hw_params.ht40_channel & BIT(band)) {
J
Johannes Berg 已提交
461 462 463
		ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
		ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
		ht_info->mcs.rx_mask[4] = 0x01;
R
Ron Rindjunsky 已提交
464
		max_bit_rate = MAX_BIT_RATE_40_MHZ;
R
Ron Rindjunsky 已提交
465 466 467
	}

	if (priv->cfg->mod_params->amsdu_size_8K)
J
Johannes Berg 已提交
468
		ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
R
Ron Rindjunsky 已提交
469 470 471 472

	ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
	ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;

J
Johannes Berg 已提交
473
	ht_info->mcs.rx_mask[0] = 0xFF;
R
Ron Rindjunsky 已提交
474
	if (rx_chains_num >= 2)
J
Johannes Berg 已提交
475
		ht_info->mcs.rx_mask[1] = 0xFF;
R
Ron Rindjunsky 已提交
476
	if (rx_chains_num >= 3)
J
Johannes Berg 已提交
477
		ht_info->mcs.rx_mask[2] = 0xFF;
R
Ron Rindjunsky 已提交
478 479 480

	/* Highest supported Rx data rate */
	max_bit_rate *= rx_chains_num;
J
Johannes Berg 已提交
481 482
	WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
	ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
R
Ron Rindjunsky 已提交
483 484

	/* Tx MCS capabilities */
J
Johannes Berg 已提交
485
	ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
R
Ron Rindjunsky 已提交
486
	if (tx_chains_num != rx_chains_num) {
J
Johannes Berg 已提交
487 488 489
		ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
		ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
				IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
R
Ron Rindjunsky 已提交
490
	}
R
Ron Rindjunsky 已提交
491 492 493 494 495
}

/**
 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 */
496
int iwlcore_init_geos(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
497 498 499 500 501 502 503 504 505 506
{
	struct iwl_channel_info *ch;
	struct ieee80211_supported_band *sband;
	struct ieee80211_channel *channels;
	struct ieee80211_channel *geo_ch;
	struct ieee80211_rate *rates;
	int i = 0;

	if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
	    priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
507
		IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
R
Ron Rindjunsky 已提交
508 509 510 511 512 513 514 515 516
		set_bit(STATUS_GEO_CONFIGURED, &priv->status);
		return 0;
	}

	channels = kzalloc(sizeof(struct ieee80211_channel) *
			   priv->channel_count, GFP_KERNEL);
	if (!channels)
		return -ENOMEM;

517
	rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
R
Ron Rindjunsky 已提交
518 519 520 521 522 523 524 525 526 527 528
			GFP_KERNEL);
	if (!rates) {
		kfree(channels);
		return -ENOMEM;
	}

	/* 5.2GHz channels start after the 2.4GHz channels */
	sband = &priv->bands[IEEE80211_BAND_5GHZ];
	sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
	/* just OFDM */
	sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
529
	sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
R
Ron Rindjunsky 已提交
530

531
	if (priv->cfg->sku & IWL_SKU_N)
J
Johannes Berg 已提交
532
		iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
533
					 IEEE80211_BAND_5GHZ);
R
Ron Rindjunsky 已提交
534 535 536 537 538

	sband = &priv->bands[IEEE80211_BAND_2GHZ];
	sband->channels = channels;
	/* OFDM & CCK */
	sband->bitrates = rates;
539
	sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
R
Ron Rindjunsky 已提交
540

541
	if (priv->cfg->sku & IWL_SKU_N)
J
Johannes Berg 已提交
542
		iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
543
					 IEEE80211_BAND_2GHZ);
R
Ron Rindjunsky 已提交
544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577

	priv->ieee_channels = channels;
	priv->ieee_rates = rates;

	for (i = 0;  i < priv->channel_count; i++) {
		ch = &priv->channel_info[i];

		/* FIXME: might be removed if scan is OK */
		if (!is_channel_valid(ch))
			continue;

		if (is_channel_a_band(ch))
			sband =  &priv->bands[IEEE80211_BAND_5GHZ];
		else
			sband =  &priv->bands[IEEE80211_BAND_2GHZ];

		geo_ch = &sband->channels[sband->n_channels++];

		geo_ch->center_freq =
				ieee80211_channel_to_frequency(ch->channel);
		geo_ch->max_power = ch->max_power_avg;
		geo_ch->max_antenna_gain = 0xff;
		geo_ch->hw_value = ch->channel;

		if (is_channel_valid(ch)) {
			if (!(ch->flags & EEPROM_CHANNEL_IBSS))
				geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;

			if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
				geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;

			if (ch->flags & EEPROM_CHANNEL_RADAR)
				geo_ch->flags |= IEEE80211_CHAN_RADAR;

578
			geo_ch->flags |= ch->ht40_extension_channel;
579

580 581
			if (ch->max_power_avg > priv->tx_power_device_lmt)
				priv->tx_power_device_lmt = ch->max_power_avg;
R
Ron Rindjunsky 已提交
582 583 584 585
		} else {
			geo_ch->flags |= IEEE80211_CHAN_DISABLED;
		}

586
		IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
R
Ron Rindjunsky 已提交
587 588 589 590 591 592 593 594 595
				ch->channel, geo_ch->center_freq,
				is_channel_a_band(ch) ?  "5.2" : "2.4",
				geo_ch->flags & IEEE80211_CHAN_DISABLED ?
				"restricted" : "valid",
				 geo_ch->flags);
	}

	if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
	     priv->cfg->sku & IWL_SKU_A) {
T
Tomas Winkler 已提交
596 597
		IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
			"Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
598 599
			   priv->pci_dev->device,
			   priv->pci_dev->subsystem_device);
R
Ron Rindjunsky 已提交
600 601 602
		priv->cfg->sku &= ~IWL_SKU_A;
	}

T
Tomas Winkler 已提交
603
	IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
604 605
		   priv->bands[IEEE80211_BAND_2GHZ].n_channels,
		   priv->bands[IEEE80211_BAND_5GHZ].n_channels);
R
Ron Rindjunsky 已提交
606 607 608 609 610

	set_bit(STATUS_GEO_CONFIGURED, &priv->status);

	return 0;
}
611
EXPORT_SYMBOL(iwlcore_init_geos);
R
Ron Rindjunsky 已提交
612 613 614 615

/*
 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 */
616
void iwlcore_free_geos(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
617 618 619 620 621
{
	kfree(priv->ieee_channels);
	kfree(priv->ieee_rates);
	clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
}
622
EXPORT_SYMBOL(iwlcore_free_geos);
R
Ron Rindjunsky 已提交
623

624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640
/*
 *  iwlcore_rts_tx_cmd_flag: Set rts/cts. 3945 and 4965 only share this
 *  function.
 */
void iwlcore_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
				__le32 *tx_flags)
{
	if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
		*tx_flags |= TX_CMD_FLG_RTS_MSK;
		*tx_flags &= ~TX_CMD_FLG_CTS_MSK;
	} else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
		*tx_flags &= ~TX_CMD_FLG_RTS_MSK;
		*tx_flags |= TX_CMD_FLG_CTS_MSK;
	}
}
EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag);

641
static bool is_single_rx_stream(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
642 643
{
	return !priv->current_ht_config.is_ht ||
644
	       priv->current_ht_config.single_chain_sufficient;
R
Ron Rindjunsky 已提交
645
}
646

647 648 649 650 651 652 653 654 655 656
static u8 iwl_is_channel_extension(struct iwl_priv *priv,
				   enum ieee80211_band band,
				   u16 channel, u8 extension_chan_offset)
{
	const struct iwl_channel_info *ch_info;

	ch_info = iwl_get_channel_info(priv, band, channel);
	if (!is_channel_valid(ch_info))
		return 0;

J
Johannes Berg 已提交
657
	if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
658
		return !(ch_info->ht40_extension_channel &
659
					IEEE80211_CHAN_NO_HT40PLUS);
J
Johannes Berg 已提交
660
	else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
661
		return !(ch_info->ht40_extension_channel &
662
					IEEE80211_CHAN_NO_HT40MINUS);
663 664 665 666

	return 0;
}

667
u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
J
Johannes Berg 已提交
668
			 struct ieee80211_sta_ht_cap *sta_ht_inf)
669
{
J
Johannes Berg 已提交
670
	struct iwl_ht_config *ht_conf = &priv->current_ht_config;
671

J
Johannes Berg 已提交
672
	if (!ht_conf->is_ht || !ht_conf->is_40mhz)
673 674
		return 0;

675 676 677
	/* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
	 * the bit will not set if it is pure 40MHz case
	 */
678
	if (sta_ht_inf) {
679
		if (!sta_ht_inf->ht_supported)
680 681
			return 0;
	}
682 683 684 685
#ifdef CONFIG_IWLWIFI_DEBUG
	if (priv->disable_ht40)
		return 0;
#endif
686 687
	return iwl_is_channel_extension(priv, priv->band,
			le16_to_cpu(priv->staging_rxon.channel),
J
Johannes Berg 已提交
688
			ht_conf->extension_chan_offset);
689
}
690
EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
691

692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748
static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
{
	u16 new_val = 0;
	u16 beacon_factor = 0;

	beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
	new_val = beacon_val / beacon_factor;

	if (!new_val)
		new_val = max_beacon_val;

	return new_val;
}

void iwl_setup_rxon_timing(struct iwl_priv *priv)
{
	u64 tsf;
	s32 interval_tm, rem;
	unsigned long flags;
	struct ieee80211_conf *conf = NULL;
	u16 beacon_int;

	conf = ieee80211_get_hw_conf(priv->hw);

	spin_lock_irqsave(&priv->lock, flags);
	priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
	priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);

	if (priv->iw_mode == NL80211_IFTYPE_STATION) {
		beacon_int = priv->beacon_int;
		priv->rxon_timing.atim_window = 0;
	} else {
		beacon_int = priv->vif->bss_conf.beacon_int;

		/* TODO: we need to get atim_window from upper stack
		 * for now we set to 0 */
		priv->rxon_timing.atim_window = 0;
	}

	beacon_int = iwl_adjust_beacon_interval(beacon_int,
				priv->hw_params.max_beacon_itrvl * 1024);
	priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);

	tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
	interval_tm = beacon_int * 1024;
	rem = do_div(tsf, interval_tm);
	priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);

	spin_unlock_irqrestore(&priv->lock, flags);
	IWL_DEBUG_ASSOC(priv,
			"beacon interval %d beacon timer %d beacon tim %d\n",
			le16_to_cpu(priv->rxon_timing.beacon_interval),
			le32_to_cpu(priv->rxon_timing.beacon_init_val),
			le16_to_cpu(priv->rxon_timing.atim_window));
}
EXPORT_SYMBOL(iwl_setup_rxon_timing);

749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862
void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
{
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;

	if (hw_decrypt)
		rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
	else
		rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;

}
EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);

/**
 * iwl_check_rxon_cmd - validate RXON structure is valid
 *
 * NOTE:  This is really only useful during development and can eventually
 * be #ifdef'd out once the driver is stable and folks aren't actively
 * making changes
 */
int iwl_check_rxon_cmd(struct iwl_priv *priv)
{
	int error = 0;
	int counter = 1;
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;

	if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
		error |= le32_to_cpu(rxon->flags &
				(RXON_FLG_TGJ_NARROW_BAND_MSK |
				 RXON_FLG_RADAR_DETECT_MSK));
		if (error)
			IWL_WARN(priv, "check 24G fields %d | %d\n",
				    counter++, error);
	} else {
		error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
				0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
		if (error)
			IWL_WARN(priv, "check 52 fields %d | %d\n",
				    counter++, error);
		error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
		if (error)
			IWL_WARN(priv, "check 52 CCK %d | %d\n",
				    counter++, error);
	}
	error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
	if (error)
		IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);

	/* make sure basic rates 6Mbps and 1Mbps are supported */
	error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
		  ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
	if (error)
		IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);

	error |= (le16_to_cpu(rxon->assoc_id) > 2007);
	if (error)
		IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);

	error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
			== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
	if (error)
		IWL_WARN(priv, "check CCK and short slot %d | %d\n",
			    counter++, error);

	error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
			== (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
	if (error)
		IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
			    counter++, error);

	error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
			RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
	if (error)
		IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
			    counter++, error);

	if (error)
		IWL_WARN(priv, "Tuning to channel %d\n",
			    le16_to_cpu(rxon->channel));

	if (error) {
		IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
		return -1;
	}
	return 0;
}
EXPORT_SYMBOL(iwl_check_rxon_cmd);

/**
 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 * @priv: staging_rxon is compared to active_rxon
 *
 * If the RXON structure is changing enough to require a new tune,
 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 */
int iwl_full_rxon_required(struct iwl_priv *priv)
{

	/* These items are only settable from the full RXON command */
	if (!(iwl_is_associated(priv)) ||
	    compare_ether_addr(priv->staging_rxon.bssid_addr,
			       priv->active_rxon.bssid_addr) ||
	    compare_ether_addr(priv->staging_rxon.node_addr,
			       priv->active_rxon.node_addr) ||
	    compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
			       priv->active_rxon.wlap_bssid_addr) ||
	    (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
	    (priv->staging_rxon.channel != priv->active_rxon.channel) ||
	    (priv->staging_rxon.air_propagation !=
	     priv->active_rxon.air_propagation) ||
	    (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
	     priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
	    (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
	     priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
863 864
	    (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
	     priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911
	    (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
		return 1;

	/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
	 * be updated with the RXON_ASSOC command -- however only some
	 * flag transitions are allowed using RXON_ASSOC */

	/* Check if we are not switching bands */
	if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
	    (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
		return 1;

	/* Check if we are switching association toggle */
	if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
		(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
		return 1;

	return 0;
}
EXPORT_SYMBOL(iwl_full_rxon_required);

u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
{
	int i;
	int rate_mask;

	/* Set rate mask*/
	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
		rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
	else
		rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;

	/* Find lowest valid rate */
	for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
					i = iwl_rates[i].next_ieee) {
		if (rate_mask & (1 << i))
			return iwl_rates[i].plcp;
	}

	/* No valid rate was found. Assign the lowest one */
	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
		return IWL_RATE_1M_PLCP;
	else
		return IWL_RATE_6M_PLCP;
}
EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);

J
Johannes Berg 已提交
912
void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
913
{
G
Gregory Greenman 已提交
914
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
915

J
Johannes Berg 已提交
916
	if (!ht_conf->is_ht) {
917
		rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
918
			RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
919
			RXON_FLG_HT40_PROT_MSK |
920
			RXON_FLG_HT_PROT_MSK);
921
		return;
922
	}
923

924 925 926
	/* FIXME: if the definition of ht_protection changed, the "translation"
	 * will be needed for rxon->flags
	 */
J
Johannes Berg 已提交
927
	rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
928 929

	/* Set up channel bandwidth:
930
	 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
931 932 933
	/* clear the HT channel mode before set the mode */
	rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
			 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
934 935
	if (iwl_is_ht40_tx_allowed(priv, NULL)) {
		/* pure ht40 */
J
Johannes Berg 已提交
936
		if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
937
			rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
938
			/* Note: control channel is opposite of extension channel */
J
Johannes Berg 已提交
939
			switch (ht_conf->extension_chan_offset) {
940 941 942 943 944 945 946 947
			case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
				rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
				break;
			case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
				rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
				break;
			}
		} else {
948
			/* Note: control channel is opposite of extension channel */
J
Johannes Berg 已提交
949
			switch (ht_conf->extension_chan_offset) {
950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966
			case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
				rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
				rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
				break;
			case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
				rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
				rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
				break;
			case IEEE80211_HT_PARAM_CHA_SEC_NONE:
			default:
				/* channel location only valid if in Mixed mode */
				IWL_ERR(priv, "invalid extension channel offset\n");
				break;
			}
		}
	} else {
		rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
967 968
	}

969 970
	if (priv->cfg->ops->hcmd->set_rxon_chain)
		priv->cfg->ops->hcmd->set_rxon_chain(priv);
971

972
	IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
J
Johannes Berg 已提交
973
			"extension channel offset 0x%x\n",
J
Johannes Berg 已提交
974 975
			le32_to_cpu(rxon->flags), ht_conf->ht_protection,
			ht_conf->extension_chan_offset);
976 977 978 979
	return;
}
EXPORT_SYMBOL(iwl_set_rxon_ht);

980 981 982 983 984
#define IWL_NUM_RX_CHAINS_MULTIPLE	3
#define IWL_NUM_RX_CHAINS_SINGLE	2
#define IWL_NUM_IDLE_CHAINS_DUAL	2
#define IWL_NUM_IDLE_CHAINS_SINGLE	1

985 986 987 988 989 990 991
/*
 * Determine how many receiver/antenna chains to use.
 *
 * More provides better reception via diversity.  Fewer saves power
 * at the expense of throughput, but only when not in powersave to
 * start with.
 *
R
Ron Rindjunsky 已提交
992 993 994
 * MIMO (dual stream) requires at least 2, but works better with 3.
 * This does not determine *which* chains to use, just how many.
 */
995
static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
996 997
{
	/* # of Rx chains to use when expecting MIMO. */
998
	if (is_single_rx_stream(priv))
999
		return IWL_NUM_RX_CHAINS_SINGLE;
R
Ron Rindjunsky 已提交
1000
	else
1001
		return IWL_NUM_RX_CHAINS_MULTIPLE;
1002
}
R
Ron Rindjunsky 已提交
1003

1004
/*
1005 1006
 * When we are in power saving mode, unless device support spatial
 * multiplexing power save, use the active count for rx chain count.
1007
 */
1008 1009
static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
{
1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033
	int idle_cnt = active_cnt;
	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);

	if (priv->cfg->support_sm_ps) {
		/* # Rx chains when idling and maybe trying to save power */
		switch (priv->current_ht_config.sm_ps) {
		case WLAN_HT_CAP_SM_PS_STATIC:
		case WLAN_HT_CAP_SM_PS_DYNAMIC:
			idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
				IWL_NUM_IDLE_CHAINS_SINGLE;
			break;
		case WLAN_HT_CAP_SM_PS_DISABLED:
			idle_cnt = (is_cam) ? active_cnt :
				IWL_NUM_IDLE_CHAINS_SINGLE;
			break;
		case WLAN_HT_CAP_SM_PS_INVALID:
		default:
			IWL_ERR(priv, "invalid sm_ps mode %d\n",
				priv->current_ht_config.sm_ps);
			WARN_ON(1);
			break;
		}
	}
	return idle_cnt;
R
Ron Rindjunsky 已提交
1034 1035
}

1036 1037 1038 1039 1040 1041 1042
/* up to 4 chains */
static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
{
	u8 res;
	res = (chain_bitmap & BIT(0)) >> 0;
	res += (chain_bitmap & BIT(1)) >> 1;
	res += (chain_bitmap & BIT(2)) >> 2;
J
Johannes Berg 已提交
1043
	res += (chain_bitmap & BIT(3)) >> 3;
1044 1045 1046
	return res;
}

1047 1048 1049 1050 1051 1052 1053
/**
 * iwl_is_monitor_mode - Determine if interface in monitor mode
 *
 * priv->iw_mode is set in add_interface, but add_interface is
 * never called for monitor mode. The only way mac80211 informs us about
 * monitor mode is through configuring filters (call to configure_filter).
 */
1054
bool iwl_is_monitor_mode(struct iwl_priv *priv)
1055 1056 1057
{
	return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
}
1058
EXPORT_SYMBOL(iwl_is_monitor_mode);
1059

R
Ron Rindjunsky 已提交
1060 1061 1062 1063 1064 1065 1066 1067
/**
 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 *
 * Selects how many and which Rx receivers/antennas/chains to use.
 * This should not be used for scan command ... it puts data in wrong place.
 */
void iwl_set_rxon_chain(struct iwl_priv *priv)
{
1068 1069
	bool is_single = is_single_rx_stream(priv);
	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1070 1071
	u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
	u32 active_chains;
1072
	u16 rx_chain;
R
Ron Rindjunsky 已提交
1073 1074 1075 1076 1077

	/* Tell uCode which antennas are actually connected.
	 * Before first association, we assume all antennas are connected.
	 * Just after first association, iwl_chain_noise_calibration()
	 *    checks which antennas actually *are* connected. */
1078 1079 1080 1081 1082 1083
	 if (priv->chain_noise_data.active_chains)
		active_chains = priv->chain_noise_data.active_chains;
	else
		active_chains = priv->hw_params.valid_rx_ant;

	rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
R
Ron Rindjunsky 已提交
1084 1085

	/* How many receivers should we use? */
1086 1087 1088 1089
	active_rx_cnt = iwl_get_active_rx_chain_count(priv);
	idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);


1090 1091 1092 1093 1094 1095 1096 1097 1098
	/* correct rx chain count according hw settings
	 * and chain noise calibration
	 */
	valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
	if (valid_rx_cnt < active_rx_cnt)
		active_rx_cnt = valid_rx_cnt;

	if (valid_rx_cnt < idle_rx_cnt)
		idle_rx_cnt = valid_rx_cnt;
1099 1100 1101 1102

	rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
	rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;

1103 1104 1105 1106 1107 1108 1109
	/* copied from 'iwl_bg_request_scan()' */
	/* Force use of chains B and C (0x6) for Rx for 4965
	 * Avoid A (0x1) because of its off-channel reception on A-band.
	 * MIMO is not used here, but value is required */
	if (iwl_is_monitor_mode(priv) &&
	    !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
	    ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1110 1111 1112 1113
		rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
		rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
		rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
		rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1114 1115
	}

1116 1117
	priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);

1118
	if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
R
Ron Rindjunsky 已提交
1119 1120 1121 1122
		priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
	else
		priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;

1123
	IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1124 1125 1126 1127 1128
			priv->staging_rxon.rx_chain,
			active_rx_cnt, idle_rx_cnt);

	WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
		active_rx_cnt < idle_rx_cnt);
R
Ron Rindjunsky 已提交
1129 1130
}
EXPORT_SYMBOL(iwl_set_rxon_chain);
1131 1132

/**
1133
 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1134 1135 1136 1137 1138 1139 1140 1141
 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 * @channel: Any channel valid for the requested phymode

 * In addition to setting the staging RXON, priv->phymode is also set.
 *
 * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 * in the staging RXON flag structure based on the phymode
 */
1142
int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1143
{
1144 1145 1146
	enum ieee80211_band band = ch->band;
	u16 channel = ieee80211_frequency_to_channel(ch->center_freq);

1147
	if (!iwl_get_channel_info(priv, band, channel)) {
1148
		IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164
			       channel, band);
		return -EINVAL;
	}

	if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
	    (priv->band == band))
		return 0;

	priv->staging_rxon.channel = cpu_to_le16(channel);
	if (band == IEEE80211_BAND_5GHZ)
		priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
	else
		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;

	priv->band = band;

1165
	IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1166 1167 1168

	return 0;
}
R
Ron Rindjunsky 已提交
1169
EXPORT_SYMBOL(iwl_set_rxon_channel);
1170

1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258
void iwl_set_flags_for_band(struct iwl_priv *priv,
			    enum ieee80211_band band)
{
	if (band == IEEE80211_BAND_5GHZ) {
		priv->staging_rxon.flags &=
		    ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
		      | RXON_FLG_CCK_MSK);
		priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
	} else {
		/* Copied from iwl_post_associate() */
		if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
			priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
		else
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

		if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
		priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
		priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
	}
}

/*
 * initialize rxon structure with default values from eeprom
 */
void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
{
	const struct iwl_channel_info *ch_info;

	memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));

	switch (mode) {
	case NL80211_IFTYPE_AP:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
		break;

	case NL80211_IFTYPE_STATION:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
		priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
		break;

	case NL80211_IFTYPE_ADHOC:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
		priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
		priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
						  RXON_FILTER_ACCEPT_GRP_MSK;
		break;

	default:
		IWL_ERR(priv, "Unsupported interface type %d\n", mode);
		break;
	}

#if 0
	/* TODO:  Figure out when short_preamble would be set and cache from
	 * that */
	if (!hw_to_local(priv->hw)->short_preamble)
		priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
	else
		priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
#endif

	ch_info = iwl_get_channel_info(priv, priv->band,
				       le16_to_cpu(priv->active_rxon.channel));

	if (!ch_info)
		ch_info = &priv->channel_info[0];

	/*
	 * in some case A channels are all non IBSS
	 * in this case force B/G channel
	 */
	if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
	    !(is_channel_ibss(ch_info)))
		ch_info = &priv->channel_info[0];

	priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
	priv->band = ch_info->band;

	iwl_set_flags_for_band(priv, priv->band);

	priv->staging_rxon.ofdm_basic_rates =
	    (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
	priv->staging_rxon.cck_basic_rates =
	    (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;

1259 1260 1261
	/* clear both MIX and PURE40 mode flag */
	priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
					RXON_FLG_CHANNEL_MODE_PURE_40);
1262 1263 1264 1265
	memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
	memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
	priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
	priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1266
	priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1267 1268 1269
}
EXPORT_SYMBOL(iwl_connection_init_rx_config);

1270
static void iwl_set_rate(struct iwl_priv *priv)
1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286
{
	const struct ieee80211_supported_band *hw = NULL;
	struct ieee80211_rate *rate;
	int i;

	hw = iwl_get_hw_mode(priv, priv->band);
	if (!hw) {
		IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
		return;
	}

	priv->active_rate = 0;
	priv->active_rate_basic = 0;

	for (i = 0; i < hw->n_bitrates; i++) {
		rate = &(hw->bitrates[i]);
1287
		if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1288 1289 1290
			priv->active_rate |= (1 << rate->hw_value);
	}

1291
	IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318
		       priv->active_rate, priv->active_rate_basic);

	/*
	 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
	 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
	 * OFDM
	 */
	if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
		priv->staging_rxon.cck_basic_rates =
		    ((priv->active_rate_basic &
		      IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
	else
		priv->staging_rxon.cck_basic_rates =
		    (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;

	if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
		priv->staging_rxon.ofdm_basic_rates =
		    ((priv->active_rate_basic &
		      (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
		      IWL_FIRST_OFDM_RATE) & 0xFF;
	else
		priv->staging_rxon.ofdm_basic_rates =
		   (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
}

void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
{
Z
Zhu Yi 已提交
1319
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1320 1321
	struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
	struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1322

W
Wey-Yi Guy 已提交
1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335
	if (priv->switch_rxon.switch_in_progress) {
		if (!le32_to_cpu(csa->status) &&
		    (csa->channel == priv->switch_rxon.channel)) {
			rxon->channel = csa->channel;
			priv->staging_rxon.channel = csa->channel;
			IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
			      le16_to_cpu(csa->channel));
		} else
			IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
			      le16_to_cpu(csa->channel));

		priv->switch_rxon.switch_in_progress = false;
	}
1336 1337 1338 1339
}
EXPORT_SYMBOL(iwl_rx_csa);

#ifdef CONFIG_IWLWIFI_DEBUG
1340
void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1341 1342 1343
{
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;

1344
	IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1345
	iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1346 1347 1348
	IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
	IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
	IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1349
			le32_to_cpu(rxon->filter_flags));
1350 1351
	IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
	IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1352
			rxon->ofdm_basic_rates);
1353 1354 1355 1356
	IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
	IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
	IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
	IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1357
}
1358
EXPORT_SYMBOL(iwl_print_rx_config_cmd);
1359
#endif
1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371
/**
 * iwl_irq_handle_error - called for HW or SW error interrupt from card
 */
void iwl_irq_handle_error(struct iwl_priv *priv)
{
	/* Set the FW error flag -- cleared on iwl_down */
	set_bit(STATUS_FW_ERROR, &priv->status);

	/* Cancel currently queued command. */
	clear_bit(STATUS_HCMD_ACTIVE, &priv->status);

#ifdef CONFIG_IWLWIFI_DEBUG
1372
	if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1373 1374
		priv->cfg->ops->lib->dump_nic_error_log(priv);
		priv->cfg->ops->lib->dump_nic_event_log(priv);
1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385
		iwl_print_rx_config_cmd(priv);
	}
#endif

	wake_up_interruptible(&priv->wait_command_queue);

	/* Keep the restart process from trying to send host
	 * commands by clearing the INIT status bit */
	clear_bit(STATUS_READY, &priv->status);

	if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1386
		IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1387 1388 1389 1390 1391 1392 1393 1394
			  "Restarting adapter due to uCode error.\n");

		if (priv->cfg->mod_params->restart_fw)
			queue_work(priv->workqueue, &priv->restart);
	}
}
EXPORT_SYMBOL(iwl_irq_handle_error);

1395 1396
int iwl_apm_stop_master(struct iwl_priv *priv)
{
1397
	int ret = 0;
1398

1399
	/* stop device's busmaster DMA activity */
1400 1401
	iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);

1402
	ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
1403
			CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1404 1405
	if (ret)
		IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
1406 1407 1408

	IWL_DEBUG_INFO(priv, "stop master\n");

1409
	return ret;
1410 1411 1412 1413 1414
}
EXPORT_SYMBOL(iwl_apm_stop_master);

void iwl_apm_stop(struct iwl_priv *priv)
{
1415 1416
	IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");

1417
	/* Stop device's DMA activity */
1418 1419
	iwl_apm_stop_master(priv);

1420
	/* Reset the entire device */
1421 1422 1423
	iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);

	udelay(10);
1424 1425 1426 1427 1428

	/*
	 * Clear "initialization complete" bit to move adapter from
	 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
	 */
1429 1430 1431 1432
	iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
}
EXPORT_SYMBOL(iwl_apm_stop);

1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473

/*
 * Start up NIC's basic functionality after it has been reset
 * (e.g. after platform boot, or shutdown via iwl_apm_stop())
 * NOTE:  This does not load uCode nor start the embedded processor
 */
int iwl_apm_init(struct iwl_priv *priv)
{
	int ret = 0;
	u16 lctl;

	IWL_DEBUG_INFO(priv, "Init card's basic functions\n");

	/*
	 * Use "set_bit" below rather than "write", to preserve any hardware
	 * bits already set by default after reset.
	 */

	/* Disable L0S exit timer (platform NMI Work/Around) */
	iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
			  CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);

	/*
	 * Disable L0s without affecting L1;
	 *  don't wait for ICH L0s (ICH bug W/A)
	 */
	iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
			  CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);

	/* Set FH wait threshold to maximum (HW error during stress W/A) */
	iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);

	/*
	 * Enable HAP INTA (interrupt from management bus) to
	 * wake device's PCI Express link L1a -> L0s
	 * NOTE:  This is no-op for 3945 (non-existant bit)
	 */
	iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
				    CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);

	/*
1474 1475 1476 1477 1478 1479
	 * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
	 * Check if BIOS (or OS) enabled L1-ASPM on this device.
	 * If so (likely), disable L0S, so device moves directly L0->L1;
	 *    costs negligible amount of power savings.
	 * If not (unlikely), enable L0S, so there is at least some
	 *    power savings, even without L1.
1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548
	 */
	if (priv->cfg->set_l0s) {
		lctl = iwl_pcie_link_ctl(priv);
		if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
					PCI_CFG_LINK_CTRL_VAL_L1_EN) {
			/* L1-ASPM enabled; disable(!) L0S  */
			iwl_set_bit(priv, CSR_GIO_REG,
					CSR_GIO_REG_VAL_L0S_ENABLED);
			IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
		} else {
			/* L1-ASPM disabled; enable(!) L0S */
			iwl_clear_bit(priv, CSR_GIO_REG,
					CSR_GIO_REG_VAL_L0S_ENABLED);
			IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
		}
	}

	/* Configure analog phase-lock-loop before activating to D0A */
	if (priv->cfg->pll_cfg_val)
		iwl_set_bit(priv, CSR_ANA_PLL_CFG, priv->cfg->pll_cfg_val);

	/*
	 * Set "initialization complete" bit to move adapter from
	 * D0U* --> D0A* (powered-up active) state.
	 */
	iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);

	/*
	 * Wait for clock stabilization; once stabilized, access to
	 * device-internal resources is supported, e.g. iwl_write_prph()
	 * and accesses to uCode SRAM.
	 */
	ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
			CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
			CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
	if (ret < 0) {
		IWL_DEBUG_INFO(priv, "Failed to init the card\n");
		goto out;
	}

	/*
	 * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
	 * BSM (Boostrap State Machine) is only in 3945 and 4965;
	 * later devices (i.e. 5000 and later) have non-volatile SRAM,
	 * and don't need BSM to restore data after power-saving sleep.
	 *
	 * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
	 * do not disable clocks.  This preserves any hardware bits already
	 * set by default in "CLK_CTRL_REG" after reset.
	 */
	if (priv->cfg->use_bsm)
		iwl_write_prph(priv, APMG_CLK_EN_REG,
			APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
	else
		iwl_write_prph(priv, APMG_CLK_EN_REG,
			APMG_CLK_VAL_DMA_CLK_RQT);
	udelay(20);

	/* Disable L1-Active */
	iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
			  APMG_PCIDEV_STT_VAL_L1_ACT_DIS);

out:
	return ret;
}
EXPORT_SYMBOL(iwl_apm_init);



1549 1550 1551
void iwl_configure_filter(struct ieee80211_hw *hw,
			  unsigned int changed_flags,
			  unsigned int *total_flags,
1552
			  u64 multicast)
1553 1554 1555 1556
{
	struct iwl_priv *priv = hw->priv;
	__le32 *filter_flags = &priv->staging_rxon.filter_flags;

1557
	IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595
			changed_flags, *total_flags);

	if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
		if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
			*filter_flags |= RXON_FILTER_PROMISC_MSK;
		else
			*filter_flags &= ~RXON_FILTER_PROMISC_MSK;
	}
	if (changed_flags & FIF_ALLMULTI) {
		if (*total_flags & FIF_ALLMULTI)
			*filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
		else
			*filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
	}
	if (changed_flags & FIF_CONTROL) {
		if (*total_flags & FIF_CONTROL)
			*filter_flags |= RXON_FILTER_CTL2HOST_MSK;
		else
			*filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
	}
	if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
		if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
			*filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
		else
			*filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
	}

	/* We avoid iwl_commit_rxon here to commit the new filter flags
	 * since mac80211 will call ieee80211_hw_config immediately.
	 * (mc_list is not supported at this time). Otherwise, we need to
	 * queue a background iwl_commit_rxon work.
	 */

	*total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
			FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
}
EXPORT_SYMBOL(iwl_configure_filter);

1596 1597 1598 1599 1600
int iwl_set_hw_params(struct iwl_priv *priv)
{
	priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
	priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
	if (priv->cfg->mod_params->amsdu_size_8K)
Z
Zhu Yi 已提交
1601
		priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
1602
	else
Z
Zhu Yi 已提交
1603
		priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
1604

1605 1606
	priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;

1607 1608 1609
	if (priv->cfg->mod_params->disable_11n)
		priv->cfg->sku &= ~IWL_SKU_N;

1610 1611 1612 1613
	/* Device-specific setup */
	return priv->cfg->ops->lib->set_hw_params(priv);
}
EXPORT_SYMBOL(iwl_set_hw_params);
T
Tomas Winkler 已提交
1614

1615 1616 1617
int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
{
	int ret = 0;
1618 1619
	s8 prev_tx_power = priv->tx_power_user_lmt;

1620
	if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1621 1622 1623
		IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
			 tx_power,
			 IWL_TX_POWER_TARGET_POWER_MIN);
1624 1625 1626
		return -EINVAL;
	}

1627
	if (tx_power > priv->tx_power_device_lmt) {
1628 1629
		IWL_WARN(priv,
			"Requested user TXPOWER %d above upper limit %d.\n",
1630
			 tx_power, priv->tx_power_device_lmt);
1631 1632 1633 1634 1635 1636
		return -EINVAL;
	}

	if (priv->tx_power_user_lmt != tx_power)
		force = true;

1637
	/* if nic is not up don't send command */
1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649
	if (iwl_is_ready_rf(priv)) {
		priv->tx_power_user_lmt = tx_power;
		if (force && priv->cfg->ops->lib->send_tx_power)
			ret = priv->cfg->ops->lib->send_tx_power(priv);
		else if (!priv->cfg->ops->lib->send_tx_power)
			ret = -EOPNOTSUPP;
		/*
		 * if fail to set tx_power, restore the orig. tx power
		 */
		if (ret)
			priv->tx_power_user_lmt = prev_tx_power;
	}
1650

1651 1652 1653 1654 1655 1656 1657
	/*
	 * Even this is an async host command, the command
	 * will always report success from uCode
	 * So once driver can placing the command into the queue
	 * successfully, driver can use priv->tx_power_user_lmt
	 * to reflect the current tx power
	 */
1658 1659 1660 1661
	return ret;
}
EXPORT_SYMBOL(iwl_set_tx_power);

M
Mohamed Abbas 已提交
1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710
#define ICT_COUNT (PAGE_SIZE/sizeof(u32))

/* Free dram table */
void iwl_free_isr_ict(struct iwl_priv *priv)
{
	if (priv->ict_tbl_vir) {
		pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
					PAGE_SIZE, priv->ict_tbl_vir,
					priv->ict_tbl_dma);
		priv->ict_tbl_vir = NULL;
	}
}
EXPORT_SYMBOL(iwl_free_isr_ict);


/* allocate dram shared table it is a PAGE_SIZE aligned
 * also reset all data related to ICT table interrupt.
 */
int iwl_alloc_isr_ict(struct iwl_priv *priv)
{

	if (priv->cfg->use_isr_legacy)
		return 0;
	/* allocate shrared data table */
	priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
						  ICT_COUNT) + PAGE_SIZE,
						  &priv->ict_tbl_dma);
	if (!priv->ict_tbl_vir)
		return -ENOMEM;

	/* align table to PAGE_SIZE boundry */
	priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);

	IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
			     (unsigned long long)priv->ict_tbl_dma,
			     (unsigned long long)priv->aligned_ict_tbl_dma,
			(int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));

	priv->ict_tbl =  priv->ict_tbl_vir +
			  (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);

	IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
			     priv->ict_tbl, priv->ict_tbl_vir,
			(int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));

	/* reset table and index to all 0 */
	memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
	priv->ict_index = 0;

1711 1712
	/* add periodic RX interrupt */
	priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
M
Mohamed Abbas 已提交
1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730
	return 0;
}
EXPORT_SYMBOL(iwl_alloc_isr_ict);

/* Device is going up inform it about using ICT interrupt table,
 * also we need to tell the driver to start using ICT interrupt.
 */
int iwl_reset_ict(struct iwl_priv *priv)
{
	u32 val;
	unsigned long flags;

	if (!priv->ict_tbl_vir)
		return 0;

	spin_lock_irqsave(&priv->lock, flags);
	iwl_disable_interrupts(priv);

1731
	memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
M
Mohamed Abbas 已提交
1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744

	val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;

	val |= CSR_DRAM_INT_TBL_ENABLE;
	val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;

	IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
			"aligned dma address %Lx\n",
			val, (unsigned long long)priv->aligned_ict_tbl_dma);

	iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
	priv->use_ict = true;
	priv->ict_index = 0;
1745
	iwl_write32(priv, CSR_INT, priv->inta_mask);
M
Mohamed Abbas 已提交
1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808
	iwl_enable_interrupts(priv);
	spin_unlock_irqrestore(&priv->lock, flags);

	return 0;
}
EXPORT_SYMBOL(iwl_reset_ict);

/* Device is going down disable ict interrupt usage */
void iwl_disable_ict(struct iwl_priv *priv)
{
	unsigned long flags;

	spin_lock_irqsave(&priv->lock, flags);
	priv->use_ict = false;
	spin_unlock_irqrestore(&priv->lock, flags);
}
EXPORT_SYMBOL(iwl_disable_ict);

/* interrupt handler using ict table, with this interrupt driver will
 * stop using INTA register to get device's interrupt, reading this register
 * is expensive, device will write interrupts in ICT dram table, increment
 * index then will fire interrupt to driver, driver will OR all ICT table
 * entries from current index up to table entry with 0 value. the result is
 * the interrupt we need to service, driver will set the entries back to 0 and
 * set index.
 */
irqreturn_t iwl_isr_ict(int irq, void *data)
{
	struct iwl_priv *priv = data;
	u32 inta, inta_mask;
	u32 val = 0;

	if (!priv)
		return IRQ_NONE;

	/* dram interrupt table not set yet,
	 * use legacy interrupt.
	 */
	if (!priv->use_ict)
		return iwl_isr(irq, data);

	spin_lock(&priv->lock);

	/* Disable (but don't clear!) interrupts here to avoid
	 * back-to-back ISRs and sporadic interrupts from our NIC.
	 * If we have something to service, the tasklet will re-enable ints.
	 * If we *don't* have something, we'll re-enable before leaving here.
	 */
	inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
	iwl_write32(priv, CSR_INT_MASK, 0x00000000);


	/* Ignore interrupt if there's nothing in NIC to service.
	 * This may be due to IRQ shared with another device,
	 * or due to sporadic interrupts thrown from our NIC. */
	if (!priv->ict_tbl[priv->ict_index]) {
		IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
		goto none;
	}

	/* read all entries that not 0 start with ict_index */
	while (priv->ict_tbl[priv->ict_index]) {

1809
		val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
M
Mohamed Abbas 已提交
1810
		IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1811 1812
				priv->ict_index,
				le32_to_cpu(priv->ict_tbl[priv->ict_index]));
M
Mohamed Abbas 已提交
1813 1814
		priv->ict_tbl[priv->ict_index] = 0;
		priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1815
						     ICT_COUNT);
M
Mohamed Abbas 已提交
1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826

	}

	/* We should not get this value, just ignore it. */
	if (val == 0xffffffff)
		val = 0;

	inta = (0xff & val) | ((0xff00 & val) << 16);
	IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
			inta, inta_mask, val);

1827
	inta &= priv->inta_mask;
M
Mohamed Abbas 已提交
1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860
	priv->inta |= inta;

	/* iwl_irq_tasklet() will service interrupts and re-enable them */
	if (likely(inta))
		tasklet_schedule(&priv->irq_tasklet);
	else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
		/* Allow interrupt if was disabled by this handler and
		 * no tasklet was schedules, We should not enable interrupt,
		 * tasklet will enable it.
		 */
		iwl_enable_interrupts(priv);
	}

	spin_unlock(&priv->lock);
	return IRQ_HANDLED;

 none:
	/* re-enable interrupts here since we don't have anything to service.
	 * only Re-enable if disabled by irq.
	 */
	if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
		iwl_enable_interrupts(priv);

	spin_unlock(&priv->lock);
	return IRQ_NONE;
}
EXPORT_SYMBOL(iwl_isr_ict);


static irqreturn_t iwl_isr(int irq, void *data)
{
	struct iwl_priv *priv = data;
	u32 inta, inta_mask;
1861
#ifdef CONFIG_IWLWIFI_DEBUG
M
Mohamed Abbas 已提交
1862
	u32 inta_fh;
1863
#endif
M
Mohamed Abbas 已提交
1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894
	if (!priv)
		return IRQ_NONE;

	spin_lock(&priv->lock);

	/* Disable (but don't clear!) interrupts here to avoid
	 *    back-to-back ISRs and sporadic interrupts from our NIC.
	 * If we have something to service, the tasklet will re-enable ints.
	 * If we *don't* have something, we'll re-enable before leaving here. */
	inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
	iwl_write32(priv, CSR_INT_MASK, 0x00000000);

	/* Discover which interrupts are active/pending */
	inta = iwl_read32(priv, CSR_INT);

	/* Ignore interrupt if there's nothing in NIC to service.
	 * This may be due to IRQ shared with another device,
	 * or due to sporadic interrupts thrown from our NIC. */
	if (!inta) {
		IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
		goto none;
	}

	if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
		/* Hardware disappeared. It might have already raised
		 * an interrupt */
		IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
		goto unplugged;
	}

#ifdef CONFIG_IWLWIFI_DEBUG
1895
	if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
M
Mohamed Abbas 已提交
1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923
		inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
		IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
			      "fh 0x%08x\n", inta, inta_mask, inta_fh);
	}
#endif

	priv->inta |= inta;
	/* iwl_irq_tasklet() will service interrupts and re-enable them */
	if (likely(inta))
		tasklet_schedule(&priv->irq_tasklet);
	else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
		iwl_enable_interrupts(priv);

 unplugged:
	spin_unlock(&priv->lock);
	return IRQ_HANDLED;

 none:
	/* re-enable interrupts here since we don't have anything to service. */
	/* only Re-enable if diabled by irq  and no schedules tasklet. */
	if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
		iwl_enable_interrupts(priv);

	spin_unlock(&priv->lock);
	return IRQ_NONE;
}

irqreturn_t iwl_isr_legacy(int irq, void *data)
A
Abhijeet Kolekar 已提交
1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979
{
	struct iwl_priv *priv = data;
	u32 inta, inta_mask;
	u32 inta_fh;
	if (!priv)
		return IRQ_NONE;

	spin_lock(&priv->lock);

	/* Disable (but don't clear!) interrupts here to avoid
	 *    back-to-back ISRs and sporadic interrupts from our NIC.
	 * If we have something to service, the tasklet will re-enable ints.
	 * If we *don't* have something, we'll re-enable before leaving here. */
	inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
	iwl_write32(priv, CSR_INT_MASK, 0x00000000);

	/* Discover which interrupts are active/pending */
	inta = iwl_read32(priv, CSR_INT);
	inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);

	/* Ignore interrupt if there's nothing in NIC to service.
	 * This may be due to IRQ shared with another device,
	 * or due to sporadic interrupts thrown from our NIC. */
	if (!inta && !inta_fh) {
		IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
		goto none;
	}

	if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
		/* Hardware disappeared. It might have already raised
		 * an interrupt */
		IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
		goto unplugged;
	}

	IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
		      inta, inta_mask, inta_fh);

	inta &= ~CSR_INT_BIT_SCD;

	/* iwl_irq_tasklet() will service interrupts and re-enable them */
	if (likely(inta || inta_fh))
		tasklet_schedule(&priv->irq_tasklet);

 unplugged:
	spin_unlock(&priv->lock);
	return IRQ_HANDLED;

 none:
	/* re-enable interrupts here since we don't have anything to service. */
	/* only Re-enable if diabled by irq */
	if (test_bit(STATUS_INT_ENABLED, &priv->status))
		iwl_enable_interrupts(priv);
	spin_unlock(&priv->lock);
	return IRQ_NONE;
}
M
Mohamed Abbas 已提交
1980
EXPORT_SYMBOL(iwl_isr_legacy);
A
Abhijeet Kolekar 已提交
1981

1982 1983 1984
int iwl_send_bt_config(struct iwl_priv *priv)
{
	struct iwl_bt_cmd bt_cmd = {
1985 1986 1987
		.flags = BT_COEX_MODE_4W,
		.lead_time = BT_LEAD_TIME_DEF,
		.max_kill = BT_MAX_KILL_DEF,
1988 1989 1990 1991 1992 1993 1994 1995 1996
		.kill_ack_mask = 0,
		.kill_cts_mask = 0,
	};

	return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
				sizeof(struct iwl_bt_cmd), &bt_cmd);
}
EXPORT_SYMBOL(iwl_send_bt_config);

1997
int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
1998
{
1999 2000 2001
	struct iwl_statistics_cmd statistics_cmd = {
		.configuration_flags =
			clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
2002
	};
2003 2004 2005 2006 2007 2008 2009 2010 2011

	if (flags & CMD_ASYNC)
		return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
					       sizeof(struct iwl_statistics_cmd),
					       &statistics_cmd, NULL);
	else
		return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
					sizeof(struct iwl_statistics_cmd),
					&statistics_cmd);
2012 2013
}
EXPORT_SYMBOL(iwl_send_statistics_request);
2014

2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026
/**
 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
 *   using sample data 100 bytes apart.  If these sample points are good,
 *   it's a pretty good bet that everything between them is good, too.
 */
static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
{
	u32 val;
	int ret = 0;
	u32 errcnt = 0;
	u32 i;

2027
	IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2028 2029 2030 2031 2032 2033

	for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
		/* read data comes through single port, auto-incr addr */
		/* NOTE: Use the debugless read so we don't flood kernel log
		 * if IWL_DL_IO is set */
		iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2034
			i + IWL49_RTC_INST_LOWER_BOUND);
2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058
		val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
		if (val != le32_to_cpu(*image)) {
			ret = -EIO;
			errcnt++;
			if (errcnt >= 3)
				break;
		}
	}

	return ret;
}

/**
 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
 *     looking at all data.
 */
static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
				 u32 len)
{
	u32 val;
	u32 save_len = len;
	int ret = 0;
	u32 errcnt;

2059
	IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2060

2061 2062
	iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
			   IWL49_RTC_INST_LOWER_BOUND);
2063 2064 2065 2066 2067 2068 2069 2070

	errcnt = 0;
	for (; len > 0; len -= sizeof(u32), image++) {
		/* read data comes through single port, auto-incr addr */
		/* NOTE: Use the debugless read so we don't flood kernel log
		 * if IWL_DL_IO is set */
		val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
		if (val != le32_to_cpu(*image)) {
2071
			IWL_ERR(priv, "uCode INST section is invalid at "
2072 2073 2074 2075 2076 2077 2078 2079 2080 2081
				  "offset 0x%x, is 0x%x, s/b 0x%x\n",
				  save_len - len, val, le32_to_cpu(*image));
			ret = -EIO;
			errcnt++;
			if (errcnt >= 20)
				break;
		}
	}

	if (!errcnt)
2082 2083
		IWL_DEBUG_INFO(priv,
		    "ucode image in INSTRUCTION memory is good\n");
2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102

	return ret;
}

/**
 * iwl_verify_ucode - determine which instruction image is in SRAM,
 *    and verify its contents
 */
int iwl_verify_ucode(struct iwl_priv *priv)
{
	__le32 *image;
	u32 len;
	int ret;

	/* Try bootstrap */
	image = (__le32 *)priv->ucode_boot.v_addr;
	len = priv->ucode_boot.len;
	ret = iwlcore_verify_inst_sparse(priv, image, len);
	if (!ret) {
2103
		IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2104 2105 2106 2107 2108 2109 2110 2111
		return 0;
	}

	/* Try initialize */
	image = (__le32 *)priv->ucode_init.v_addr;
	len = priv->ucode_init.len;
	ret = iwlcore_verify_inst_sparse(priv, image, len);
	if (!ret) {
2112
		IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2113 2114 2115 2116 2117 2118 2119 2120
		return 0;
	}

	/* Try runtime/protocol */
	image = (__le32 *)priv->ucode_code.v_addr;
	len = priv->ucode_code.len;
	ret = iwlcore_verify_inst_sparse(priv, image, len);
	if (!ret) {
2121
		IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2122 2123 2124
		return 0;
	}

2125
	IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137

	/* Since nothing seems to match, show first several data entries in
	 * instruction SRAM, so maybe visual inspection will give a clue.
	 * Selection of bootstrap image (vs. other images) is arbitrary. */
	image = (__le32 *)priv->ucode_boot.v_addr;
	len = priv->ucode_boot.len;
	ret = iwl_verify_inst_full(priv, image, len);

	return ret;
}
EXPORT_SYMBOL(iwl_verify_ucode);

2138

2139 2140 2141
void iwl_rf_kill_ct_config(struct iwl_priv *priv)
{
	struct iwl_ct_kill_config cmd;
2142
	struct iwl_ct_kill_throttling_config adv_cmd;
2143 2144 2145 2146 2147 2148 2149
	unsigned long flags;
	int ret = 0;

	spin_lock_irqsave(&priv->lock, flags);
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
		    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
	spin_unlock_irqrestore(&priv->lock, flags);
2150
	priv->thermal_throttle.ct_kill_toggle = false;
2151

2152
	if (priv->cfg->support_ct_kill_exit) {
2153 2154 2155 2156 2157 2158 2159
		adv_cmd.critical_temperature_enter =
			cpu_to_le32(priv->hw_params.ct_kill_threshold);
		adv_cmd.critical_temperature_exit =
			cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);

		ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
				       sizeof(adv_cmd), &adv_cmd);
2160 2161 2162 2163 2164 2165 2166 2167 2168
		if (ret)
			IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
		else
			IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
					"succeeded, "
					"critical temperature enter is %d,"
					"exit is %d\n",
				       priv->hw_params.ct_kill_threshold,
				       priv->hw_params.ct_kill_exit_threshold);
2169
	} else {
2170 2171
		cmd.critical_temperature_R =
			cpu_to_le32(priv->hw_params.ct_kill_threshold);
2172

2173 2174
		ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
				       sizeof(cmd), &cmd);
2175 2176 2177 2178 2179 2180 2181
		if (ret)
			IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
		else
			IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
					"succeeded, "
					"critical temperature is %d\n",
					priv->hw_params.ct_kill_threshold);
2182
	}
2183 2184
}
EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2185

2186

2187 2188 2189 2190 2191 2192 2193 2194 2195 2196
/*
 * CARD_STATE_CMD
 *
 * Use: Sets the device's internal card state to enable, disable, or halt
 *
 * When in the 'enable' state the card operates as normal.
 * When in the 'disable' state, the card enters into a low power mode.
 * When in the 'halt' state, the card is shut down and must be fully
 * restarted to come back on.
 */
2197
int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2198 2199 2200 2201 2202
{
	struct iwl_host_cmd cmd = {
		.id = REPLY_CARD_STATE_CMD,
		.len = sizeof(u32),
		.data = &flags,
J
Johannes Berg 已提交
2203
		.flags = meta_flag,
2204 2205 2206 2207 2208
	};

	return iwl_send_cmd(priv, &cmd);
}

A
Abhijeet Kolekar 已提交
2209 2210 2211 2212
void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
			   struct iwl_rx_mem_buffer *rxb)
{
#ifdef CONFIG_IWLWIFI_DEBUG
Z
Zhu Yi 已提交
2213
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
A
Abhijeet Kolekar 已提交
2214 2215 2216 2217 2218 2219 2220 2221 2222 2223
	struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
	IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
		     sleep->pm_sleep_mode, sleep->pm_wakeup_src);
#endif
}
EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);

void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
				      struct iwl_rx_mem_buffer *rxb)
{
Z
Zhu Yi 已提交
2224
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
2225
	u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
A
Abhijeet Kolekar 已提交
2226
	IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2227 2228 2229
			"notification for %s:\n", len,
			get_cmd_string(pkt->hdr.cmd));
	iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
A
Abhijeet Kolekar 已提交
2230 2231
}
EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2232 2233 2234 2235

void iwl_rx_reply_error(struct iwl_priv *priv,
			struct iwl_rx_mem_buffer *rxb)
{
Z
Zhu Yi 已提交
2236
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247

	IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
		"seq 0x%04X ser 0x%08X\n",
		le32_to_cpu(pkt->u.err_resp.error_type),
		get_cmd_string(pkt->u.err_resp.cmd_id),
		pkt->u.err_resp.cmd_id,
		le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
		le32_to_cpu(pkt->u.err_resp.error_info));
}
EXPORT_SYMBOL(iwl_rx_reply_error);

2248 2249 2250 2251 2252
void iwl_clear_isr_stats(struct iwl_priv *priv)
{
	memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
}

A
Abhijeet Kolekar 已提交
2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295
int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
			   const struct ieee80211_tx_queue_params *params)
{
	struct iwl_priv *priv = hw->priv;
	unsigned long flags;
	int q;

	IWL_DEBUG_MAC80211(priv, "enter\n");

	if (!iwl_is_ready_rf(priv)) {
		IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
		return -EIO;
	}

	if (queue >= AC_NUM) {
		IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
		return 0;
	}

	q = AC_NUM - 1 - queue;

	spin_lock_irqsave(&priv->lock, flags);

	priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
	priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
	priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
	priv->qos_data.def_qos_parm.ac[q].edca_txop =
			cpu_to_le16((params->txop * 32));

	priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
	priv->qos_data.qos_active = 1;

	if (priv->iw_mode == NL80211_IFTYPE_AP)
		iwl_activate_qos(priv, 1);
	else if (priv->assoc_id && iwl_is_associated(priv))
		iwl_activate_qos(priv, 0);

	spin_unlock_irqrestore(&priv->lock, flags);

	IWL_DEBUG_MAC80211(priv, "leave\n");
	return 0;
}
EXPORT_SYMBOL(iwl_mac_conf_tx);
2296 2297

static void iwl_ht_conf(struct iwl_priv *priv,
2298
			struct ieee80211_bss_conf *bss_conf)
2299
{
J
Johannes Berg 已提交
2300
	struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2301 2302 2303 2304
	struct ieee80211_sta *sta;

	IWL_DEBUG_MAC80211(priv, "enter: \n");

J
Johannes Berg 已提交
2305
	if (!ht_conf->is_ht)
2306 2307
		return;

J
Johannes Berg 已提交
2308
	ht_conf->ht_protection =
2309
		bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
J
Johannes Berg 已提交
2310
	ht_conf->non_GF_STA_present =
2311
		!!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2312

2313 2314 2315 2316 2317
	ht_conf->single_chain_sufficient = false;

	switch (priv->iw_mode) {
	case NL80211_IFTYPE_STATION:
		rcu_read_lock();
2318
		sta = ieee80211_find_sta(priv->vif, priv->bssid);
2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349
		if (sta) {
			struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
			int maxstreams;

			maxstreams = (ht_cap->mcs.tx_params &
				      IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
					>> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
			maxstreams += 1;

			if ((ht_cap->mcs.rx_mask[1] == 0) &&
			    (ht_cap->mcs.rx_mask[2] == 0))
				ht_conf->single_chain_sufficient = true;
			if (maxstreams <= 1)
				ht_conf->single_chain_sufficient = true;
		} else {
			/*
			 * If at all, this can only happen through a race
			 * when the AP disconnects us while we're still
			 * setting up the connection, in that case mac80211
			 * will soon tell us about that.
			 */
			ht_conf->single_chain_sufficient = true;
		}
		rcu_read_unlock();
		break;
	case NL80211_IFTYPE_ADHOC:
		ht_conf->single_chain_sufficient = true;
		break;
	default:
		break;
	}
2350 2351 2352 2353 2354 2355

	IWL_DEBUG_MAC80211(priv, "leave\n");
}

#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
void iwl_bss_info_changed(struct ieee80211_hw *hw,
2356 2357 2358
			  struct ieee80211_vif *vif,
			  struct ieee80211_bss_conf *bss_conf,
			  u32 changes)
2359 2360
{
	struct iwl_priv *priv = hw->priv;
2361
	int ret;
2362 2363 2364

	IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);

2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375
	if (!iwl_is_alive(priv))
		return;

	mutex_lock(&priv->mutex);

	if (changes & BSS_CHANGED_BEACON &&
	    priv->iw_mode == NL80211_IFTYPE_AP) {
		dev_kfree_skb(priv->ibss_beacon);
		priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
	}

J
Johannes Berg 已提交
2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388
	if (changes & BSS_CHANGED_BEACON_INT) {
		priv->beacon_int = bss_conf->beacon_int;
		/* TODO: in AP mode, do something to make this take effect */
	}

	if (changes & BSS_CHANGED_BSSID) {
		IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);

		/*
		 * If there is currently a HW scan going on in the
		 * background then we need to cancel it else the RXON
		 * below/in post_associate will fail.
		 */
2389
		if (iwl_scan_cancel_timeout(priv, 100)) {
J
Johannes Berg 已提交
2390
			IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2391 2392 2393 2394 2395
			IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
			mutex_unlock(&priv->mutex);
			return;
		}

J
Johannes Berg 已提交
2396 2397 2398 2399 2400
		/* mac80211 only sets assoc when in STATION mode */
		if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
		    bss_conf->assoc) {
			memcpy(priv->staging_rxon.bssid_addr,
			       bss_conf->bssid, ETH_ALEN);
2401

J
Johannes Berg 已提交
2402 2403 2404 2405 2406
			/* currently needed in a few places */
			memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
		} else {
			priv->staging_rxon.filter_flags &=
				~RXON_FILTER_ASSOC_MSK;
2407
		}
J
Johannes Berg 已提交
2408

2409 2410
	}

J
Johannes Berg 已提交
2411 2412 2413 2414 2415
	/*
	 * This needs to be after setting the BSSID in case
	 * mac80211 decides to do both changes at once because
	 * it will invoke post_associate.
	 */
2416 2417 2418 2419 2420 2421 2422 2423
	if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
	    changes & BSS_CHANGED_BEACON) {
		struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);

		if (beacon)
			iwl_mac_beacon_update(hw, beacon);
	}

2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440
	if (changes & BSS_CHANGED_ERP_PREAMBLE) {
		IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
				   bss_conf->use_short_preamble);
		if (bss_conf->use_short_preamble)
			priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
		else
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
	}

	if (changes & BSS_CHANGED_ERP_CTS_PROT) {
		IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
		if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
			priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
		else
			priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
	}

J
Johannes Berg 已提交
2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457
	if (changes & BSS_CHANGED_BASIC_RATES) {
		/* XXX use this information
		 *
		 * To do that, remove code from iwl_set_rate() and put something
		 * like this here:
		 *
		if (A-band)
			priv->staging_rxon.ofdm_basic_rates =
				bss_conf->basic_rates;
		else
			priv->staging_rxon.ofdm_basic_rates =
				bss_conf->basic_rates >> 4;
			priv->staging_rxon.cck_basic_rates =
				bss_conf->basic_rates & 0xF;
		 */
	}

2458 2459
	if (changes & BSS_CHANGED_HT) {
		iwl_ht_conf(priv, bss_conf);
2460 2461 2462

		if (priv->cfg->ops->hcmd->set_rxon_chain)
			priv->cfg->ops->hcmd->set_rxon_chain(priv);
2463 2464 2465 2466 2467 2468 2469 2470 2471 2472
	}

	if (changes & BSS_CHANGED_ASSOC) {
		IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
		if (bss_conf->assoc) {
			priv->assoc_id = bss_conf->aid;
			priv->beacon_int = bss_conf->beacon_int;
			priv->timestamp = bss_conf->timestamp;
			priv->assoc_capability = bss_conf->assoc_capability;

J
Johannes Berg 已提交
2473 2474
			iwl_led_associate(priv);

J
Johannes Berg 已提交
2475 2476 2477 2478 2479
			/*
			 * We have just associated, don't start scan too early
			 * leave time for EAPOL exchange to complete.
			 *
			 * XXX: do this in mac80211
2480 2481 2482
			 */
			priv->next_scan_jiffies = jiffies +
					IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
J
Johannes Berg 已提交
2483 2484
			if (!iwl_is_rfkill(priv))
				priv->cfg->ops->lib->post_associate(priv);
J
Johannes Berg 已提交
2485
		} else {
2486
			priv->assoc_id = 0;
J
Johannes Berg 已提交
2487 2488
			iwl_led_disassociate(priv);
		}
J
Johannes Berg 已提交
2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499
	}

	if (changes && iwl_is_associated(priv) && priv->assoc_id) {
		IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
				   changes);
		ret = iwl_send_rxon_assoc(priv);
		if (!ret) {
			/* Sync active_rxon with latest change. */
			memcpy((void *)&priv->active_rxon,
				&priv->staging_rxon,
				sizeof(struct iwl_rxon_cmd));
2500 2501
		}
	}
J
Johannes Berg 已提交
2502

2503 2504 2505 2506 2507 2508 2509 2510
	if ((changes & BSS_CHANGED_BEACON_ENABLED) &&
	    vif->bss_conf.enable_beacon) {
		memcpy(priv->staging_rxon.bssid_addr,
		       bss_conf->bssid, ETH_ALEN);
		memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
		iwlcore_config_ap(priv);
	}

J
Johannes Berg 已提交
2511 2512
	mutex_unlock(&priv->mutex);

2513
	IWL_DEBUG_MAC80211(priv, "leave\n");
2514 2515 2516
}
EXPORT_SYMBOL(iwl_bss_info_changed);

2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557
int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
{
	struct iwl_priv *priv = hw->priv;
	unsigned long flags;
	__le64 timestamp;

	IWL_DEBUG_MAC80211(priv, "enter\n");

	if (!iwl_is_ready_rf(priv)) {
		IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
		return -EIO;
	}

	if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
		IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
		return -EIO;
	}

	spin_lock_irqsave(&priv->lock, flags);

	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	priv->ibss_beacon = skb;

	priv->assoc_id = 0;
	timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
	priv->timestamp = le64_to_cpu(timestamp);

	IWL_DEBUG_MAC80211(priv, "leave\n");
	spin_unlock_irqrestore(&priv->lock, flags);

	iwl_reset_qos(priv);

	priv->cfg->ops->lib->post_associate(priv);


	return 0;
}
EXPORT_SYMBOL(iwl_mac_beacon_update);

2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580
int iwl_set_mode(struct iwl_priv *priv, int mode)
{
	if (mode == NL80211_IFTYPE_ADHOC) {
		const struct iwl_channel_info *ch_info;

		ch_info = iwl_get_channel_info(priv,
			priv->band,
			le16_to_cpu(priv->staging_rxon.channel));

		if (!ch_info || !is_channel_ibss(ch_info)) {
			IWL_ERR(priv, "channel %d not IBSS channel\n",
				  le16_to_cpu(priv->staging_rxon.channel));
			return -EINVAL;
		}
	}

	iwl_connection_init_rx_config(priv, mode);

	if (priv->cfg->ops->hcmd->set_rxon_chain)
		priv->cfg->ops->hcmd->set_rxon_chain(priv);

	memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);

2581
	iwl_clear_stations_table(priv);
2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592

	/* dont commit rxon if rf-kill is on*/
	if (!iwl_is_ready_rf(priv))
		return -EAGAIN;

	iwlcore_commit_rxon(priv);

	return 0;
}
EXPORT_SYMBOL(iwl_set_mode);

2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629
int iwl_mac_add_interface(struct ieee80211_hw *hw,
				 struct ieee80211_if_init_conf *conf)
{
	struct iwl_priv *priv = hw->priv;
	unsigned long flags;

	IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);

	if (priv->vif) {
		IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
		return -EOPNOTSUPP;
	}

	spin_lock_irqsave(&priv->lock, flags);
	priv->vif = conf->vif;
	priv->iw_mode = conf->type;

	spin_unlock_irqrestore(&priv->lock, flags);

	mutex_lock(&priv->mutex);

	if (conf->mac_addr) {
		IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
		memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
	}

	if (iwl_set_mode(priv, conf->type) == -EAGAIN)
		/* we are not ready, will run again when ready */
		set_bit(STATUS_MODE_PENDING, &priv->status);

	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211(priv, "leave\n");
	return 0;
}
EXPORT_SYMBOL(iwl_mac_add_interface);

2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654
void iwl_mac_remove_interface(struct ieee80211_hw *hw,
				     struct ieee80211_if_init_conf *conf)
{
	struct iwl_priv *priv = hw->priv;

	IWL_DEBUG_MAC80211(priv, "enter\n");

	mutex_lock(&priv->mutex);

	if (iwl_is_ready_rf(priv)) {
		iwl_scan_cancel_timeout(priv, 100);
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
		iwlcore_commit_rxon(priv);
	}
	if (priv->vif == conf->vif) {
		priv->vif = NULL;
		memset(priv->bssid, 0, ETH_ALEN);
	}
	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211(priv, "leave\n");

}
EXPORT_SYMBOL(iwl_mac_remove_interface);

2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666
/**
 * iwl_mac_config - mac80211 config callback
 *
 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
 * be set inappropriately and the driver currently sets the hardware up to
 * use it whenever needed.
 */
int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
{
	struct iwl_priv *priv = hw->priv;
	const struct iwl_channel_info *ch_info;
	struct ieee80211_conf *conf = &hw->conf;
J
Johannes Berg 已提交
2667
	struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710
	unsigned long flags = 0;
	int ret = 0;
	u16 ch;
	int scan_active = 0;

	mutex_lock(&priv->mutex);

	IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
					conf->channel->hw_value, changed);

	if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
			test_bit(STATUS_SCANNING, &priv->status))) {
		scan_active = 1;
		IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
	}


	/* during scanning mac80211 will delay channel setting until
	 * scan finish with changed = 0
	 */
	if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
		if (scan_active)
			goto set_ch_out;

		ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
		ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
		if (!is_channel_valid(ch_info)) {
			IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
			ret = -EINVAL;
			goto set_ch_out;
		}

		if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
			!is_channel_ibss(ch_info)) {
			IWL_ERR(priv, "channel %d in band %d not "
				"IBSS channel\n",
				conf->channel->hw_value, conf->channel->band);
			ret = -EINVAL;
			goto set_ch_out;
		}

		spin_lock_irqsave(&priv->lock, flags);

2711 2712 2713 2714 2715 2716
		/* Configure HT40 channels */
		ht_conf->is_ht = conf_is_ht(conf);
		if (ht_conf->is_ht) {
			if (conf_is_ht40_minus(conf)) {
				ht_conf->extension_chan_offset =
					IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2717
				ht_conf->is_40mhz = true;
2718 2719 2720
			} else if (conf_is_ht40_plus(conf)) {
				ht_conf->extension_chan_offset =
					IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2721
				ht_conf->is_40mhz = true;
2722 2723 2724
			} else {
				ht_conf->extension_chan_offset =
					IEEE80211_HT_PARAM_CHA_SEC_NONE;
2725
				ht_conf->is_40mhz = false;
2726 2727
			}
		} else
2728
			ht_conf->is_40mhz = false;
2729 2730 2731
		/* Default to no protection. Protection mode will later be set
		 * from BSS config in iwl_ht_conf */
		ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742

		/* if we are switching from ht to 2.4 clear flags
		 * from any ht related info since 2.4 does not
		 * support ht */
		if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
			priv->staging_rxon.flags = 0;

		iwl_set_rxon_channel(priv, conf->channel);

		iwl_set_flags_for_band(priv, conf->channel->band);
		spin_unlock_irqrestore(&priv->lock, flags);
W
Wey-Yi Guy 已提交
2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758
		if (iwl_is_associated(priv) &&
		    (le16_to_cpu(priv->active_rxon.channel) != ch) &&
		    priv->cfg->ops->lib->set_channel_switch) {
			iwl_set_rate(priv);
			/*
			 * at this point, staging_rxon has the
			 * configuration for channel switch
			 */
			ret = priv->cfg->ops->lib->set_channel_switch(priv,
				ch);
			if (!ret) {
				iwl_print_rx_config_cmd(priv);
				goto out;
			}
			priv->switch_rxon.switch_in_progress = false;
		}
2759 2760 2761 2762 2763 2764 2765
 set_ch_out:
		/* The list of supported rates and rate mask can be different
		 * for each band; since the band may have changed, reset
		 * the rate mask to what mac80211 lists */
		iwl_set_rate(priv);
	}

2766 2767
	if (changed & (IEEE80211_CONF_CHANGE_PS |
			IEEE80211_CONF_CHANGE_IDLE)) {
2768
		ret = iwl_power_update_mode(priv, false);
2769
		if (ret)
2770
			IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783
	}

	if (changed & IEEE80211_CONF_CHANGE_POWER) {
		IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
			priv->tx_power_user_lmt, conf->power_level);

		iwl_set_tx_power(priv, conf->power_level, false);
	}

	/* call to ensure that 4965 rx_chain is set properly in monitor mode */
	if (priv->cfg->ops->hcmd->set_rxon_chain)
		priv->cfg->ops->hcmd->set_rxon_chain(priv);

2784 2785 2786 2787 2788
	if (!iwl_is_ready(priv)) {
		IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
		goto out;
	}

2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805
	if (scan_active)
		goto out;

	if (memcmp(&priv->active_rxon,
		   &priv->staging_rxon, sizeof(priv->staging_rxon)))
		iwlcore_commit_rxon(priv);
	else
		IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");


out:
	IWL_DEBUG_MAC80211(priv, "leave\n");
	mutex_unlock(&priv->mutex);
	return ret;
}
EXPORT_SYMBOL(iwl_mac_config);

2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841
int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
			 struct ieee80211_tx_queue_stats *stats)
{
	struct iwl_priv *priv = hw->priv;
	int i, avail;
	struct iwl_tx_queue *txq;
	struct iwl_queue *q;
	unsigned long flags;

	IWL_DEBUG_MAC80211(priv, "enter\n");

	if (!iwl_is_ready_rf(priv)) {
		IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
		return -EIO;
	}

	spin_lock_irqsave(&priv->lock, flags);

	for (i = 0; i < AC_NUM; i++) {
		txq = &priv->txq[i];
		q = &txq->q;
		avail = iwl_queue_space(q);

		stats[i].len = q->n_window - avail;
		stats[i].limit = q->n_window - q->high_mark;
		stats[i].count = q->n_window;

	}
	spin_unlock_irqrestore(&priv->lock, flags);

	IWL_DEBUG_MAC80211(priv, "leave\n");

	return 0;
}
EXPORT_SYMBOL(iwl_mac_get_tx_stats);

2842 2843 2844 2845 2846 2847 2848 2849 2850
void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
{
	struct iwl_priv *priv = hw->priv;
	unsigned long flags;

	mutex_lock(&priv->mutex);
	IWL_DEBUG_MAC80211(priv, "enter\n");

	spin_lock_irqsave(&priv->lock, flags);
J
Johannes Berg 已提交
2851
	memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866
	spin_unlock_irqrestore(&priv->lock, flags);

	iwl_reset_qos(priv);

	spin_lock_irqsave(&priv->lock, flags);
	priv->assoc_id = 0;
	priv->assoc_capability = 0;
	priv->assoc_station_added = 0;

	/* new association get rid of ibss beacon skb */
	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	priv->ibss_beacon = NULL;

2867
	priv->beacon_int = priv->vif->bss_conf.beacon_int;
2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902
	priv->timestamp = 0;
	if ((priv->iw_mode == NL80211_IFTYPE_STATION))
		priv->beacon_int = 0;

	spin_unlock_irqrestore(&priv->lock, flags);

	if (!iwl_is_ready_rf(priv)) {
		IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
		mutex_unlock(&priv->mutex);
		return;
	}

	/* we are restarting association process
	 * clear RXON_FILTER_ASSOC_MSK bit
	 */
	if (priv->iw_mode != NL80211_IFTYPE_AP) {
		iwl_scan_cancel_timeout(priv, 100);
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
		iwlcore_commit_rxon(priv);
	}

	if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
		IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
		mutex_unlock(&priv->mutex);
		return;
	}

	iwl_set_rate(priv);

	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211(priv, "leave\n");
}
EXPORT_SYMBOL(iwl_mac_reset_tsf);

2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923
int iwl_alloc_txq_mem(struct iwl_priv *priv)
{
	if (!priv->txq)
		priv->txq = kzalloc(
			sizeof(struct iwl_tx_queue) * priv->cfg->num_of_queues,
			GFP_KERNEL);
	if (!priv->txq) {
		IWL_ERR(priv, "Not enough memory for txq \n");
		return -ENOMEM;
	}
	return 0;
}
EXPORT_SYMBOL(iwl_alloc_txq_mem);

void iwl_free_txq_mem(struct iwl_priv *priv)
{
	kfree(priv->txq);
	priv->txq = NULL;
}
EXPORT_SYMBOL(iwl_free_txq_mem);

2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951
int iwl_send_wimax_coex(struct iwl_priv *priv)
{
	struct iwl_wimax_coex_cmd uninitialized_var(coex_cmd);

	if (priv->cfg->support_wimax_coexist) {
		/* UnMask wake up src at associated sleep */
		coex_cmd.flags |= COEX_FLAGS_ASSOC_WA_UNMASK_MSK;

		/* UnMask wake up src at unassociated sleep */
		coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
		memcpy(coex_cmd.sta_prio, cu_priorities,
			sizeof(struct iwl_wimax_coex_event_entry) *
			 COEX_NUM_OF_EVENTS);

		/* enabling the coexistence feature */
		coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;

		/* enabling the priorities tables */
		coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
	} else {
		/* coexistence is disabled */
		memset(&coex_cmd, 0, sizeof(coex_cmd));
	}
	return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD,
				sizeof(coex_cmd), &coex_cmd);
}
EXPORT_SYMBOL(iwl_send_wimax_coex);

2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049
#ifdef CONFIG_IWLWIFI_DEBUGFS

#define IWL_TRAFFIC_DUMP_SIZE	(IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)

void iwl_reset_traffic_log(struct iwl_priv *priv)
{
	priv->tx_traffic_idx = 0;
	priv->rx_traffic_idx = 0;
	if (priv->tx_traffic)
		memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
	if (priv->rx_traffic)
		memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
}

int iwl_alloc_traffic_mem(struct iwl_priv *priv)
{
	u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;

	if (iwl_debug_level & IWL_DL_TX) {
		if (!priv->tx_traffic) {
			priv->tx_traffic =
				kzalloc(traffic_size, GFP_KERNEL);
			if (!priv->tx_traffic)
				return -ENOMEM;
		}
	}
	if (iwl_debug_level & IWL_DL_RX) {
		if (!priv->rx_traffic) {
			priv->rx_traffic =
				kzalloc(traffic_size, GFP_KERNEL);
			if (!priv->rx_traffic)
				return -ENOMEM;
		}
	}
	iwl_reset_traffic_log(priv);
	return 0;
}
EXPORT_SYMBOL(iwl_alloc_traffic_mem);

void iwl_free_traffic_mem(struct iwl_priv *priv)
{
	kfree(priv->tx_traffic);
	priv->tx_traffic = NULL;

	kfree(priv->rx_traffic);
	priv->rx_traffic = NULL;
}
EXPORT_SYMBOL(iwl_free_traffic_mem);

void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
		      u16 length, struct ieee80211_hdr *header)
{
	__le16 fc;
	u16 len;

	if (likely(!(iwl_debug_level & IWL_DL_TX)))
		return;

	if (!priv->tx_traffic)
		return;

	fc = header->frame_control;
	if (ieee80211_is_data(fc)) {
		len = (length > IWL_TRAFFIC_ENTRY_SIZE)
		       ? IWL_TRAFFIC_ENTRY_SIZE : length;
		memcpy((priv->tx_traffic +
		       (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
		       header, len);
		priv->tx_traffic_idx =
			(priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
	}
}
EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);

void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
		      u16 length, struct ieee80211_hdr *header)
{
	__le16 fc;
	u16 len;

	if (likely(!(iwl_debug_level & IWL_DL_RX)))
		return;

	if (!priv->rx_traffic)
		return;

	fc = header->frame_control;
	if (ieee80211_is_data(fc)) {
		len = (length > IWL_TRAFFIC_ENTRY_SIZE)
		       ? IWL_TRAFFIC_ENTRY_SIZE : length;
		memcpy((priv->rx_traffic +
		       (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
		       header, len);
		priv->rx_traffic_idx =
			(priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
	}
}
EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189

const char *get_mgmt_string(int cmd)
{
	switch (cmd) {
		IWL_CMD(MANAGEMENT_ASSOC_REQ);
		IWL_CMD(MANAGEMENT_ASSOC_RESP);
		IWL_CMD(MANAGEMENT_REASSOC_REQ);
		IWL_CMD(MANAGEMENT_REASSOC_RESP);
		IWL_CMD(MANAGEMENT_PROBE_REQ);
		IWL_CMD(MANAGEMENT_PROBE_RESP);
		IWL_CMD(MANAGEMENT_BEACON);
		IWL_CMD(MANAGEMENT_ATIM);
		IWL_CMD(MANAGEMENT_DISASSOC);
		IWL_CMD(MANAGEMENT_AUTH);
		IWL_CMD(MANAGEMENT_DEAUTH);
		IWL_CMD(MANAGEMENT_ACTION);
	default:
		return "UNKNOWN";

	}
}

const char *get_ctrl_string(int cmd)
{
	switch (cmd) {
		IWL_CMD(CONTROL_BACK_REQ);
		IWL_CMD(CONTROL_BACK);
		IWL_CMD(CONTROL_PSPOLL);
		IWL_CMD(CONTROL_RTS);
		IWL_CMD(CONTROL_CTS);
		IWL_CMD(CONTROL_ACK);
		IWL_CMD(CONTROL_CFEND);
		IWL_CMD(CONTROL_CFENDACK);
	default:
		return "UNKNOWN";

	}
}

void iwl_clear_tx_stats(struct iwl_priv *priv)
{
	memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));

}

void iwl_clear_rx_stats(struct iwl_priv *priv)
{
	memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
}

/*
 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
 * Use debugFs to display the rx/rx_statistics
 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
 * information will be recorded, but DATA pkt still will be recorded
 * for the reason of iwl_led.c need to control the led blinking based on
 * number of tx and rx data.
 *
 */
void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
{
	struct traffic_stats	*stats;

	if (is_tx)
		stats = &priv->tx_stats;
	else
		stats = &priv->rx_stats;

	if (ieee80211_is_mgmt(fc)) {
		switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
		case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
			stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
			stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
			stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
			stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
			stats->mgmt[MANAGEMENT_PROBE_REQ]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
			stats->mgmt[MANAGEMENT_PROBE_RESP]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_BEACON):
			stats->mgmt[MANAGEMENT_BEACON]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_ATIM):
			stats->mgmt[MANAGEMENT_ATIM]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
			stats->mgmt[MANAGEMENT_DISASSOC]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_AUTH):
			stats->mgmt[MANAGEMENT_AUTH]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
			stats->mgmt[MANAGEMENT_DEAUTH]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_ACTION):
			stats->mgmt[MANAGEMENT_ACTION]++;
			break;
		}
	} else if (ieee80211_is_ctl(fc)) {
		switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
		case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
			stats->ctrl[CONTROL_BACK_REQ]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_BACK):
			stats->ctrl[CONTROL_BACK]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
			stats->ctrl[CONTROL_PSPOLL]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_RTS):
			stats->ctrl[CONTROL_RTS]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_CTS):
			stats->ctrl[CONTROL_CTS]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_ACK):
			stats->ctrl[CONTROL_ACK]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_CFEND):
			stats->ctrl[CONTROL_CFEND]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
			stats->ctrl[CONTROL_CFENDACK]++;
			break;
		}
	} else {
		/* data */
		stats->data_cnt++;
		stats->data_bytes += len;
	}
3190
	iwl_leds_background(priv);
3191 3192
}
EXPORT_SYMBOL(iwl_update_stats);
3193 3194
#endif

3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234
#ifdef CONFIG_PM

int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
	struct iwl_priv *priv = pci_get_drvdata(pdev);

	/*
	 * This function is called when system goes into suspend state
	 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
	 * first but since iwl_mac_stop() has no knowledge of who the caller is,
	 * it will not call apm_ops.stop() to stop the DMA operation.
	 * Calling apm_ops.stop here to make sure we stop the DMA.
	 */
	priv->cfg->ops->lib->apm_ops.stop(priv);

	pci_save_state(pdev);
	pci_disable_device(pdev);
	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
}
EXPORT_SYMBOL(iwl_pci_suspend);

int iwl_pci_resume(struct pci_dev *pdev)
{
	struct iwl_priv *priv = pci_get_drvdata(pdev);
	int ret;

	pci_set_power_state(pdev, PCI_D0);
	ret = pci_enable_device(pdev);
	if (ret)
		return ret;
	pci_restore_state(pdev);
	iwl_enable_interrupts(priv);

	return 0;
}
EXPORT_SYMBOL(iwl_pci_resume);

#endif /* CONFIG_PM */